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Why is my B string not as loud as other?

I can't find the Rumble 15 manual. Not sure if it would show a frequency response or curve. But I am thinking you just need a bigger driver and more power. Read the manual and you will see why 10 is a bad idea in terms of how the active compression circuitry works.

You can get some great used Peavey or Crate combos for well under $200 with 100 watts and 15" driver minimum. They weigh about 80 pounds though:)
 
I can't find the Rumble 15 manual. Not sure if it would show a frequency response or curve. But I am thinking you just need a bigger driver and more power. Read the manual and you will see why 10 is a bad idea in terms of how the active compression circuitry works.

You can get some great used Peavey or Crate combos for well under $200 with 100 watts and 15" driver minimum. They weigh about 80 pounds though:)

Alright, thanks! :D
 
Sometimes thicker strings like the B or E don't angle properly on the saddle because of their massive body. This makes the string sound weak, because they don't press on the saddle the way they should do. If that's the case, just press with your finger on the string, just before where it touches the saddle (I mean the vibrating side of the string), to give it the proper angle. I hope I could explain.
 
If indeed you are using a 15W amp with an 8" speaker, upgrading your amp is something you will want to put high on your list of things to do. I have had poor results trying to get useable volume on all 5 strings using 1x10's or lower. IME, I prefer at least a 12" speaker to hear a decent B. 2x10 or a single 15 will also work, IMHO.

For around the price of the Rumble 75, there are some options that can give you many more watts, which is a good thing for a 5. If you look used, there are all kinds of things available.

Good Luck!

Good advice there. If I were you, I would just bring your bass down to a local music shop or two and try out as many amps as you can with your bass. This will not only clarify if the problem is the amp (which sounds likely) or something else, but it will give you a good idea of what speaker config and wattage is going to work for you. Even if the amps are out of your price range, you can then always hunt down a used one.
 
I doubt that there is anything wrong with your bass.... however there is zero hope of a rumble 15 with an 8" speaker producing 30Hz (low B) at the same level as (say) the A string...none. zip. zero.

That is a seriously low frequency....if you do some research at cabinets you will see that most cabinets have already falling off in response before they get to the low E (41Hz)... for example the $900 Uber 115 has a -10dB response at E...so expect low B to be -15 to -20dB down.

to get a good LF response you need cabient size, a large cone, and a sizeable amp..so follow the advice to go check out something that is 200W+ and has a single 15.. and do this without cranking the bass control to max.. that is a sure way to blow a speaker along the way.... or buy some old used 115 or 215 cabinet on the cheap and get some healthy amp.. none of the trendy tiny lightweight combos will do anything for you.. go old school.
 

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